00257456 PDF BRITISH STANDARD BS EN 26554 1991 ISO 6554 1980 Specification for Face to face dimensions for flanged automatic steam traps The European Standard EN 26554 1991 has the status of a British[.]
BRITISH STANDARD Specification for Face-to-face dimensions for flanged automatic steam traps The European Standard EN 26554:1991 has the status of a British Standard BS EN 26554:1991 ISO 6554:1980 BS EN 26554:1991 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries This British Standard was published under the authority of the Standards Board and comes into effect on 29 November 1991 © BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference PSE/7 Draft for comment 79/73418 DC ISBN 580 20218 Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y France Association franỗaise de normalisation Germany Deutsches Institut fỹr Normung e.V Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portuguès da Qualidade Spain Asociación Espola de Normalización y Certificación Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd No Date Comments BS EN 26554:1991 Contents Cooperating organizations National foreword Foreword Text of EN 26554 National appendix NA (informative) © BSI 10-1999 Page Inside front cover ii Inside back cover i BS EN 26554:1991 National foreword This British Standard has been prepared under the direction of the Piping Systems Components Standards Policy Committee It is the English language version of EN 26554:1991 “Flanged automatic steam traps — Face-to-face dimensions” published by the European Committee for Standardization (CEN) It supersedes BS 6026:1981 which is withdrawn EN 26554:1991 is identical with ISO 6554:1980 published by the International Organization for Standardization (ISO) The standard referred to in clause 2.1 is indicated as being at the stage of draft This standard, ISO 6708, was published in 1980 A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application Compliance with a British Standard does not of itself confer immunity from legal obligations Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages to 4, an inside back cover and a back cover This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover ii © BSI 10-1999 EUROPEAN STANDARD EN 26554:1991 NORME EUROPÉENNE October 1991 EUROPÄISCHE NORM UDC 621.646.9.057.6:621.186.6 Descriptors: Valves and fittings, traps: drainage, water vapour, steam, flanged valves, automatic equipment, dimensions English version Flanged automatic steam traps — Face-to-face dimensions (ISO 6554:1980) Purgeurs automatiques de vapeur d’eau brides — Dimensions face face (ISO 6554:1980) Kondensatableiter mit Flanschanschluss — Baulängen (ISO 6554:1980) This European Standard was approved by CEN on 30 September 1991 and is identical to the ISO standard as referred to CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © CEN 1991 Copyright reserved to all CEN members Ref No EN 26554:1991 E EN 26554:1991 Foreword On the proposal of the Technical Committee CEN/TC 69 “Industrial Valves” CEN BT decided by resolution C67/1990 to submit the International Standard ISO 6554:1980: Flanged automatic steam traps — Face-to-face dimensions to Formal Vote This European Standard EN 26554 was approved by CEN on July 1991 According to the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom Contents Foreword Scope and field of application Definitions Dimensions Table — Face-to-face dimensions Page 3 3 © BSI 10-1999 EN 26554:1991 Scope and field of application This International Standard specifies face-to-face dimensions for a range of automatic steam traps used in flanged pipe systems These figures apply only to the steam traps themselves, and not to the whole assembly (accessories included) as installed in the pipeline Table — Face-to-face dimensions Definitions 2.1 nominal size (DN)1) numerical designation of size which is common to all components in a piping system other than components designated by outside diameters It is a convenient round number used for reference purposes, and it is only loosely related to manufacturing dimensions It is designated by the letters DN, followed by a number 2.2 face-to-face dimension the distance, expressed in millimetres, between the two planes, perpendicular to the trap axis, located at the extremities of the body end ports DN 15 20 25 FTF Series n° 2a 50 150 170 210 230 290 160 210 230 310 380 350 450 420 490 500 560 (32) 40 4a 230 270 320 480 580 680 NOTE The nominal size presented between brackets in this table, (DN 32), is retained on a provisional basis and for a limited time a These two series apply only to models already existing Dimensions The six basic series of face-to-face dimensions for flanged automatic steam traps, expressed in millimetres, are given in the table for the nominal sizes ranging from DN 15 to DN 50 inclusive, and for pressures to PN 40 inclusive 1) In accordance with ISO 6708, at present at the stage of draft © BSI 10-1999 blank BS EN 26554:1991 National appendix NA (informative) The United Kingdom participation in the preparation of this European Standard was entrusted by the Piping Systems Components Standards Policy Committee (PSE/-) to Technical Committee PSE/7, upon which the following bodies were represented: Amalgamated Engineering Union Association of Bronze and Brass Founders Association of Building Component Manufacturers British Chemical Engineering Contractors’ Association British Foundry Association British Gas plc British Maritime Technology British Plumbing Fittings Manufacturers’ Association British Valve and Actuator Manufacturers’ Association Chartered Institution of Building Services Engineers Copper Development Association Department of the Environment (Property Services Agency) Electricity Industry in United Kingdom Energy Industries Council Engineering Equipment and Materials Users’ Association Fire Extinguishing Trades Association GAMBICA (BEAMA Ltd.) Health and Safety Executive Institute of British Foundrymen Institution of Chemical Engineers Institution of Mechanical Engineers Institution of Water and Environmental Management Liquefied Petroleum Gas Industry Technical Association (UK) Pipeline Industries Guild Society of British Gas Industries Society of British Water Industries Water Companies Association Water Services Association of England and Wales West Midlands CBI © BSI 10-1999 BS EN 26554:1991 ISO 6554:1980 BSI — British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: 020 8996 9000 Fax: 020 8996 7400 BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services Tel: 020 8996 9001 Fax: 020 8996 7001 In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service Various BSI electronic information services are also available which give details on all its products and services Contact the Information Centre Tel: 020 8996 7111 Fax: 020 8996 7048 Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details of these and other benefits contact Membership Administration Tel: 020 8996 7002 Fax: 020 8996 7001 Copyright Copyright subsists in all BSI publications BSI also holds the copyright, in the UK, of the publications of the international standardization bodies Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained BSI 389 Chiswick High Road London W4 4AL If permission is granted, the terms may include royalty payments or a licensing agreement Details and advice can be obtained from the Copyright Manager Tel: 020 8996 7070